Improvement in stem-winding watches



C. E. JACOT.

Stem-Winding Watch.

No. 101.881. Patented April 12, 1870.

waited. seam gated" cam.

Letters Patent No 101,881, dated April 12, 1870.

IMPROVEMENT IN STEM-WINDING WATCHES The Schedule referred to in theseLetters Patent and making part of the same.

To all whom it may concern Be it known that I, CHARLES E. J ACOT, acitizen of the United States, now in GhauX-de-Fond, Switzerland, haveinvented, made, and applied to use, a new and useful Improvement inMeans for Winding and Setting Watches; and I do hereby declare thefollowing to be a full, clear, and exact description of the same,reference being had to the annexed drawing making part'ot thisspecification, wherein Figure 1 is an elevation, in enlarged size, ofthe said improvement; also showing portions of the works of the watch.

Figure 2 is a section at the line at 12, and

Figure 3 is an inverted plan of the swinging-plate without thegear-wheels.

Similar marks of reference denote the same parts.

This invention is an improvement upon that for which Letters Patent weregranted to me November 26, 1867, No. 71,389, and a reference is, herebymade to the said patent fora more full and complete description of theconstruction and operation of those parts that occur or are shown inboth the drawings, or that are named hereafter.

In the drawing the watch-plate a, secondary plate I), arbor-plate orbridge, 0, spring-barrel 0, minutehand wheel f, intermediate wheel as,stem t, and bevelpinion r, are all substantially the same as in theaforesaid Letters Patent, and require no further description.

Instead of having the. plate 70 between the bevelgear h and wheel I, asin said patent, the whpel lis make with beveled teeth on one side,intowhich the wheel 1' of the stem-winder gears, and the gear-wheel 10of said patent is dispensed with, the wheel at being stud t thatisscrewed firmly into the plate of the watch, and between this plate Itand a shoulder on the stud i is the wheel Z.

The wheels at and n are upon the upper surface of the swinging-plate it,but in order to allow their teeth to gear into the teeth of the wheel I,the plate It is recessed or formed with depressions that bring thewheels in and a down into line with the wheel I, and the circularrecesses into which the respective wheels set, intersecting each other,produce openings that allow the teeth to gear together, but do notmaterially lessen the strength of the swinging plate It.

The stud 11, upon the swinging-plate 7c, is acted upon by a leversimilar to the lever y in said patent, or by any other convenient means,to bring the wheel on into gear with the intermediate wheel 2;, so thatthe hands can be set by the stem t.

In the usual or normal position the wheel a is in gear with the wheel ofthe spring-barrel 0, so that the same may be employed in winding thewatch.

It will now be apparent that by constructing the plate 70 in the mannerbefore described, the parts are rendered much less complicated andcostly, and they are not liable to become injured in use.

I claim as my invention- The swinging-plate it, formed with depressionson opposite sides for gears I m n that gear into each other, incombination with the stud 11, and winding and setting mechanism,substantially as and for the purposes set forth.

In witness whereof I have hereunto set my signature this 15th day of.October, A. D. 1869.

CHAS. E. JAOO'I.

Witnesses D. FER,

E. RAMSEYA,

